Abstract: Interactive three-dimensional (3D) virtual tours are generated from ordinary two-dimensional (2D) still images such as photographs. Two or more 2D images are combined to form a 3D scene, which defines a relationship among the 2D images in 3D space. 3D pipes connect the 2D images with one another according to defined spatial relationships and for guiding virtual camera movement from one image to the next. A user can then take a 3D virtual tour by traversing images within the 3D scene, for example by moving from one image to another, either in response to user input or automatically. In various embodiments, some or all of the 2D images can be selectively distorted to enhance the 3D effect, and thereby reinforce the impression that the user is moving within a 3D space. Transitions from one image to the next can take place automatically without requiring explicit user interaction.